Cool Science of the Week Silent space: Did you know that every science fiction movie that allows you to hear a blast is boldly lying to you? Sound waves need a medium to travel through, so in the vacuum of outer space, there’s no sound…or is there? A plasma physicist has discovered that charged particles interact with Earth’s magnetosphere to create a different kind of sound wave, a magnetosonic wave. These waves are very low in pressure and are therefore undetectable, but they can affect satellites. Below the awesome gif is an audio file that makes these space sounds audible by condensing a year’s worth of sound into six minutes. Check it out!
On the audio below, click on the white lines in the lower right to hear the sounds after clicking the play button in the top left. Alternately you can click here to access the researcher’s external site.
This Week in Physics We lost a lot of time last week due to scheduling, and each section has different starting points for the week. Therefore please follow the announcements for your particular class section regarding when each of the following will be due. (Your class period may have already done some of these.)
Cool Science of Last Week Last week Elon Musk‘s SpaceX launched a new rocket model into space. The Falcon Heavy rocket has the cool feature of returning its rocket boosters back to Earth in a way that allows them to land for reuse. You can check out their synchronized landing at the end of the short video clip below – so cool! Also super cool: The Falcon Heavy, while in space, released into an orbit around the sun a Tesla Roadster, an electric car from Mr. Musk’s other company, Tesla. In the Roadster: an astronaut mannequin named Starman. On the dashboard: a sign that says “Don’t Panic.” Music playing in the car: Starman by David Bowie, natch. Bonus trivia: For how long could the mennequin hear the song play (if the mannequin could hear)? Bonus bonus trivia trivia: Elon Musk was the inspiration for the movie version of which fictional character? (Bonus trivia is worth only the bonus of fame and glory, not points. 🙂 ) The following is a real picture! Ridic!
This Week in Physics For Monday please complete assignment 1. In class on Monday we will go over assignment 1 and will put the finishing touches on our law of conservation of momentum experiment. On Tuesday we will take a quiz over goal set 1. (If your class does not finish going over goal set 1 in class on Monday it will be due on Tuesday.) As announced please take notes on PODCAST 2: Types of Collisions – The role of kinetic energy. We will complete assignment 2 and will reprocess our data from our mini law of conservation of momentum lab from the perspective of analyzing the types of collisions. By the end of the week we will take a quiz over goal set 2. We may be ready to take notes on the last podcast of the unit by Friday, but with scheduling for next school year taking place this week, it is likely that you will take notes on that for next week. Stay tuned!